Assigwqb to lottis g



L. G. FREEMAN.

ABRADJNG BELT.

APPLICATION [ILED SEPT Patented Aug. 15, 1916.

UNITE STATES ra'rENr orri-ea;

- LoUIs G. EEEEEAN, 0E CINCINNATI, OHIO, ASSIGNOR TO 'LOUIS G. FREEMANAND CHARLES E. FREEMAN, BOTH QF-CINCINNATI, OHIO, TRUSTEES." I

ABRADINQBELT,

Specification of Letters Patent. Patented Aug, 15, 1916;

Application filed September 8, 1915. Serial No. 49,493. i I

To all whom it may concern: 1 Y

Be itknown that I, LOUIS G. FREEMAN, a citizen of the United States,and. resident of Cincinnath'in'the county of Hamilton and State of Ohio,have invented an Improvement in Abrading-Belts, of which the followingdescription, in connection With the accompanying drawings, is aspecification, like letters on the drawings representing like parts.

My present invention is an improved buding orabrading belt and theobjects of the invention are to provide such a belt for machines,particularly shoe machines, where the edge portion of the belt receivesconsiderable wear. In belt butting or abrading inachines, such forexample, as those shown in my pending applications No. 776,520,filedJune 30, 1913, and No. 836,850, filed May 17, 1914, it is important andnecessary to have the edge portions of the abrading belt at all times inproper condition. The greatest factor inthe usefulness and life of thebutting belt depends upon the edge holding its abrasive and standing upto the work, and as soon as the edge is Worn out". the entirebelt isuseless. In the type of bailing machinereferred toin my said priorapplications, the buffing belt is so arranged as to operate upon theheel breasts of boots and shoes, one edge of the belt performing thebuffing action at thev angle or iunction of the shoe shank and heelbreast This line of work is peculiarly severe upon the ordinary buffingor abrading belt, which is usually made of sandpaper oremery cloth, andsome abrasive material, glued thereon. Such cloth or paper being cut instrips from rolls of sand paper oi emery cloth, leaves the edge roughand unprotected, and hence easily frayed out. Even in the best emerycloth belts, the exposed edge, as soon as applied to the work, rapidlyloosens the textile fabric and separates the fibers, thus fraying outthe edges. The same result is found in a paper belt, Where sand paper isemployed. I have discovered that the edge portions of such butfingbelts, either. of textile or paper backing, may be reinforced so as tostand up to the Work and last as long as the body portion of the belt. Iaccomplish this desirable result by reinforcing the edge, and also aportion of the reverse side of the backing by a coating of glue or thelike, and preferably by first cutting the strips forming such beltsfromrolls of abrasive material on the bias or-; angularly with relationtothelayof the fibers comprising same, andthen coating the edges. 'lhus1n the making of, an emery clothbufiing belt, such belts beingjusuallynarrow in Width, Icut them. from sheets '1;

of emery cloth at any suitable -angle,', either at 45, or at alesser-orgreaterangle with the warp-and woof of said cloth. By

having a long or acute angle-dillerentthan a 45 cut,-I obtain a moreeasily running, 'and smoother oint Where the ends of the like, andcomplete thebelt by uniting the ends in any desired manner. .The bufiingbelt thus made prevents the edge portions from being quickly frayed out,fibers of the textile material being more firmly held at the edge, aseach thread of both Warp and woof extends at once inwardly from saidedge, than formerly, where one thread is parallel with the edge.

Referring to the drawings illustrating a preferred embodiment of theinvention, Figure 1 is a perspective-view of the. buffing belt; and Fig.2 is a cross sectional view of this butting belt. 9

It will be understood that these bufiing belts are relatively narrow andare cut in strips from flat sheets of material coated with abrasive'i'The belt 1 being so cut, f on the bias or angularly with relation to theinterwoven fibers of the backing, whether textile or paper, isoverlapped or otherwise joined by a piece 2. This buffing belt comprisesthebacking 1, layer of' glue 3, and abrasive, such sand paper, corundum,or the like, 4. Either before the strip 1 is formed into a belt, asillustrated in Fig. 1, or thereafter, the further coating of glue ateach edge 5 and (3 is given, such additional coating being on theexposed edge and a portion of. the backing, as illustrated in Fig. 2. ifdesired this additional coating of glue could be extended entirelyacross the backing, but I find it feasible, in practice, to simply coatthe exposed edge and adjacent part of the backing. Such coating of glueholds the edge of the belt from fraying, enables the bufling belt to beused efficiently across its entire surface, including both edges, andgreatly increases the life of the belt, as Well as insuring uniformityof work, particularly along the edge portions during such use. While Iprefer to out such buffing belts angularly, as above explained, the edgecoating feature is of equal importance where applied to such angularlycut belt strips, or those as now made, 2'. e. With the strip parallelwith the fibers 0f the backing.

My invention is further described and defined in the form of claims asfollows:

1. As an article of manufacture, an abrasive belt formed from a strip oftextile material or paper, having on one side an adhesive and theabrasive material, together with anadditional coating of adhesive on theedges of the belt strip applied thereon after the abrasive material. I

2. As an article of manufacture, an abrasive belt formed from a strip oftextile ma terial or paper, having on one side an adhesive and theabrasive material, together With an additional coating of adhesive onboth edges of the belt strip and upon the marginal portion of the backof said strip.

3. As an article of manufacture, an endless abrasive belt, formed from asheet of textile material or paper and cut from said sheet angularlywith relation to the fibers thereof, an adhesive coating on one side andabrasive material applied thereto.

4:. An article of manufacture, an endless abrasive belt, formed from asheet of textile material or paper and cut from said sheet angularlywith relation to the fibers thereof, an adhesive coating on one side andabrasive material applied thereto, together with an additional coatingof adhesive on the projecting fibers left by said angular cut at theedges of said strip.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

LOUIS G. FREEMAN.

